content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /**
   * Base reactive classes: Observable, Single and Completable; base reactive consumers;
   * other common base interfaces.
   *
   * <p>A library that enables subscribing to and composing asynchronous events and
   * callbacks.</p>
   * <p>The Observable/Observer, Single/SingleObserver and
   * Completable/CompletableObserver interfaces and associated operators (in
   * the {@code io.reactivex.observable.internal.operators} package) are inspired by the
   * Reactive Rx library in Microsoft .NET but designed and implemented on
   * the more advanced Reactive-Streams ( http://www.reactivestreams.org ) principles.</p>
   * <p>
   * More information can be found at <a
   * href="http://msdn.microsoft.com/en-us/data/gg577609">http://msdn.microsoft.com/en-us/data/gg577609</a>.
   * </p>
   *
   *
   * <p>Compared with the Microsoft implementation:
   * <ul>
   * <li>Observable == IObservable (base type)</li>
   * <li>Observer == IObserver (event consumer)</li>
   * <li>Disposable == IDisposable (resource/cancellation management)</li>
   * <li>Observable == Observable (factory methods)</li>
   * </ul>
   * The Single, Maybe and Completable reactive base types have no equivalent in Rx.NET as of 3.x.
   * <p>Services which intend on exposing data asynchronously and wish
   * to allow reactive processing and composition can implement the
   * {@link io.reactivex.observable.Observable}, {@link io.reactivex.observable.Single},
   * {@link io.reactivex.observable.Maybe} or {@link io.reactivex.observable.Completable}
   * class which then allow consumers to subscribe to them
   * and receive events.</p>
   * <p>Usage examples can be found on the {@link io.reactivex.observable.Observable} class.</p>
   */
  package io.reactivex.observable;
  
  